She explained: "I didn't have any hesitation at all. It was such a great script. It's a fantastic book.

"My daughter is going to be 13, and my son is almost 10, and they're getting to that age where this is the type of literature they're going to be reading very soon.

"In fact, my daughter, two days ago, came home from school and went, 'Mom! You're never going to believe it. Rufus came up to me at school and said, 'Is your mom really in Divergent? Is there going to be a premiere? Can you get me a ticket?'

"My daughter suddenly [had a] new-found respect. 'My mum is actually really cool.' I'm just going to go with that. I did it because I wanted my kids to think I was cool."